Heating-diaphragm.



No. 680,494. Patented Aug. I3, 1901.

.1. MEYER.

HEATING DIAPHRAGM.

(Application filed Sept. 8, 1900-)v (No Model.)

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' NlTE Tiaras JOSEPH MEYER, OF BONDHILL, OIIIO.

HEATING=DIAPHRAGM.

SPECIFICATION forming part of Letters Patent No. 680,494, dated August13, 1901.

Application filed September 8, 1900. Serial No. 29,375. (No model.)

To (all whom it may concern."

Beit known that I, JOSEPH MEYER, of Bondhill, in the county of Hamiltonand State of Ohio, have invented certain Improvements inHeating-Diaphragms, of which the following is a specification.

This invention relates to certain improvements in heating-diaphragmssuch as are adapted for employment upon stoves and otherheating-surfaces for supporting articles, and has for its object toprovide a device of this character of a simple and inexpensiveconstruction which shall be adapted for use in heating articles on thestove or in the oven where it is not desired to boil or cook sucharticles at a high temperature, such as would be imparted were thearticles placed directly upon the stove itself.

The invention consists in certain novel features of the construction andarrangement of the several parts of the improved heatingdiaphragm,whereby certain important advantages are attained and the device is madesimpler, cheaper, and is otherwise better adapted and more convenientfor use, all as will be hereinafter fully set forth.

The novel features of the invention will be carefully defined in theclaims.

In the accompanying drawings, which serve to illustrate my invention,Figure 1 is a substantially central vertical section through my improvedheating-diaphragm. Fig. 2 is a similar view of a modified form thereof.

As shown in the drawings, the device consists of a piece 1 of plate orsheet metal, preferably circular in form, although it may be made inother shapes, having produced in it a number of openings 2 2, formed byparallel slits in the body portion of the sheet metal, the metal cut orpressed out to form each opening being left attached to the body of theplate 1 along one edge of the opening and being bent or extended downfrom the under side of the plate at right angles, as shown at belessened to the extent desired by reason of the circulation of airpermitted beneath the plate and through the openings 2 thereof. Thelower edges or under sides of the feet or supports 3 are parallel toeach other and to the top of the stove or other surface on which theimproved device is supported, so as to permit of readily sliding thedevice about on the stove-top and serving to prevent said feet orsupports from catching upon irregularities in the stove-top when soslid.

The size and number of the openings 2 may be varied at will, as may alsothe length of the feet or supports 3, in order to accommodate the devicefor different uses when it is desired that more or less of the heat fromthe stove or other heater shall be conducted to the article supporteduponthe device.

The metal cut or punched from the plate 1 to form each opening 2 isdivided into two parts by a transverse central .cut, one part being leftattached to the body of the plate at each of two opposite sides or edgesof the opening 2. These attached portions are then bent or extended downat right angles, as shown at 4 4, to form feet or supports at oppositesides of each opening 2. In this case each foot or support is of buthalf the size of the opening along which it extends.

In Fig. 2 is shown a construction wherein each opening 2 has at one sidea foot or sup- .port 4 bent or extended down, as in Fig. 1,

and at the other or opposite side has an upwardly bent or extendedsupport 5 to hold the article to be heated up above and out of contactwith the body of the plate 1, so as to provide a space for thecirculation of air between said body 1 and the article rested thereon,as well as a space between the plate and the heating-surface, as in thepreceding forms of the device.

The bent parts or supports in each form of the device are extended inalinement with each other in series extended parallel with each otheracross the surface of the body of the device, so as to interfere aslittle as possible with the circulation of air beneath the body. Therows or series of bent portions or supports formed on the body producebetween them channels adapted for the free passage of air-currents, andthe air so conveyed across under the said body is adapted for contact atintervals in said channels with the under side of the vessel or articleheld on the device at the openings 2, so as to absorb heat from sucharticle, as will be readily understood.

The improved heating diaphragm constructed as above described is of anextremely simple, light, and inexpensive nature, since it may readily beformed from quite thin metal plate by means of dies and does not requireto be cast. The device is also very durable, is not liable to be broken,and is especially Well adapted for supporting articles upon a stove orin an oven and maintaining them in a hot condition without exposing themto a veryhigh temperature, but always escaping the boiling-point. Thedevice may also be used for toasting bread, broiling, &c., especiallythe construction shown in Fig. 2. Having thus described my invention,what I claim, and desire to secure by Letters Patcut, is

1. As an improved article of manufacture a heating-diaphragm comprising.a metallic body portion and supports, the said supports being formed byparallel slits in the body portion forming strips, said strips beingdivided transversely and bent at substantially right JOSEPH MEYER.

Witnesses:

JOHN ELIAS J ONES, JAMEs F. LUDDON.

